.head {
    position: fixed;
    top:0;
    width: 100%;
    height: 70px;
    background-color: #fff;
    box-shadow: 0 3px 6px 0 rgba(0, 0, 0, 0.1);
}

.logo {
    display: inline-block;
    margin-left: 20px;
    margin-top: 5px;
    height: 60px;
    width: 180px;
    
}

.nav {
    float: right;
}

.nav ul {
    float: right;
    margin-right: 50px;
}

.nav ul li {
    width: 80px;
    float: right;
    margin-top: 10px;
    height: 50px;

    font-size: 16px;
    line-height: 50px;
    text-align: center;
}

.nav ul li:hover {
    border-bottom: 2px skyblue solid;
    cursor: pointer;
}

.nav ul li:hover a {
    color: skyblue;
}


.headpicture {
    margin-top: 5px;
    margin-right: 50px;
    float: right;
    width: 60px;
    height: 60px;
    border-radius: 30px;
    background-color: pink;
}
